VAL Avionics NAV 2000 Installationsanleitung Seite 153

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SV-EMS-220/221 Installation and Configuration
SkyView System Installation Guide - Revision R 7-45
For Dynon Avionics P/N 100411-000 and P/N 100411-001 pressure sensors, if
Teflon tape or other sealant is used, ensure the sensor casing still maintains a
good connection to ground.
Rotax 914 Differential Fuel Pressure Sensor
The fuel pressure sensors that Dynon Avionics sells are not suitable for use with
the Rotax 914 engine, as Rotax specifies that fuel pressure on the 914 engine be
measured with respect to the air box pressure. All fuel pressure sensors sold by
Dynon Avionics are only capable of measuring fuel pressure against ambient air
pressure.
The UMA N1EU07D sensor is a differential pressure sensor which measures fuel pressure with
respect to air box pressure as required by the 914 engine. One UMA N1EU07D sensor is
installed on 914 engines, but that sensor is dedicated to the 914 ECU, and the output of the
sensor cannot be shared between the ECU and SkyView. To display a 914 engine’s fuel pressure
on SkyView, a second UMA N1EU07D sensor must be purchased and installed. This sensor is not
supplied by Dynon Avionics.
Install the differential fuel pressure sender in an area convenient to the connections on the
engine. The mounting threads are 5/8-18. Connect side of sender marked with a “W” to the fuel
line close to the carburetors. Use 1/8-27 pipe thread fitting. Connect the other side of sender to
the air box. This can be done by inserting a “T” in the carb vent lines that go to the air box. Use
a 1/8-27 pipe thread, barbed insert into the sender. Make sure all fittings on the air box lines
are tight using spring clamps or tie wraps.
UMA N1EU07D Wiring:
Wire Color
Function
SV-EMS-220 D37 Pin Connector
(Dynon Harness Color)
Notes
Red
Power (12V)
Pin 15 (Red)
This pin may be
shared with other
sensors
Black
Ground
Pin 3, 13, 16, 17, or 30 (Black)
This pin may be
shared with other
sensors
White
Sensor output
Pin 8 (Brown), or
Pin 22 (Violet/Yellow), or
Pin 23 (Violet/Green), or
Pin 31 (White/Orange)
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